I believe that Bruce Collins and/or Randall Aiken had posted revised values previously to use with the 250k/50k reissue pot (the original was 350k/70k). Can someone repost that? (The changes were a lot more drastic than I would have thought...)

That was me, but I didn't save the post. I simply used the impedance scaling formulas available in the paper on my website entitled "Tone control scaling". I scaled all impedances by the 250k/350k impedance scaling factor (ZSF = 0.714). The new values are obtained by the following formulas:

R' = R*ZSF
L' = L*ZSF
C' = C/ZSF

If nobody archived that post, I'll recalculate the values if needed, but it should be fairly straightforward with the above formulas.